Ruby array sum?

Question

I am attempting to use what I have learned so far in the practice section but I am stuck. I need to find #s below a given number that are either divisible by 3 or 5, then those numbers added together for the sum.

I'm getting the divisible numbers just fine, say if I input 10 then my result will be [3, 5, 6, 9], but I cannot for the life of me figure out how to take that array created & sum it.

Edit: Also if a # is divisble by both 3 & 5, it doesn't appear twice in the array. Need to be able to plug any number in.

Can anybody help point me in the right direction? Much appreciated!!

https://code.sololearn.com/cNgclGps6BcU/?ref=app

Answer 1

Like this?

def sum_multiples(num)
mult = []
i = 1
while i < num
if (i % 3 == 0)
mult << i
end
if (i % 5 == 0)
mult << i
end

i += 1
end
return mult.sum
end

print sum_multiples(10)